text: import random from './randomizer'
  
  export function decrease(number, min, max) {
    return Math.max(0, number - adjustment(min, max))
  }
  
  export function increase(number, ceiling, min, max) {
    return Math.min(ceiling, number + adjustment(min, max))
  }
  
  function adjustment(min, max) {
    return max
      ? random(min, max)
      : min
  }
  